question Re: Unable to run query select * from <table_name> in Archives of Support Questions (Read Only)

Unable to run query select * from

Vishwa828 — Mon, 19 Sep 2022 19:05:01 GMT

Hi,

I see below error,

Could some one please help.

[dayrhedpru007.enterprisenet.org:21000] > select * from events_census limit 2;

Query: select * from events_census limit 2

ERROR: AnalysisException: Failed to load metadata for table: agf_dev.events_census

CAUSED BY: TableLoadingException: Unrecognized table type for table: agf_dev.events_census

Re: Unable to run query select * from

Tim Armstrong — Tue, 03 Nov 2015 21:33:44 GMT

You may be querying an unsupported table type, or the table metadata may be corrupted. We don't support all of Hive's table storage options.

If you run "show create table table_name" in Impala, or Hive if it fails in Impala, this will have more information about how the table is stored.

Re: Unable to run query select * from

Vishwa828 — Wed, 04 Nov 2015 08:18:12 GMT

Hi Tim,

Many thanks for the reply. I am trying to find out root cause of this issue and issue is present only for one table but for other tables.

I am trying to find out to check if the metadata is corrupted or not.

How to check the same, your help is valuable.

Re: Unable to run query select * from

Tim Armstrong — Wed, 04 Nov 2015 15:13:14 GMT

It would be useful to know how the table was created. Was it created in Impala or another tool like Hive? If you created it in Hive, can you query it from hive?

Re: Unable to run query select * from

Vishwa828 — Thu, 05 Nov 2015 05:14:37 GMT

Thanks for the reply. I will get back to you with the information shortly.

Re: Unable to run query select * from

Vishwa828 — Fri, 06 Nov 2015 06:35:20 GMT

Hi,

Here is the output from hive/impala. Table is created in hive.

HIVE

===

hive> SHOW CREATE TABLE tablename;

CREATE TABLE `tablename`(

`time` int,

`instrumentationserver` string,

`cid` string,

`contentgroup` string,

`actiontype` string,

`resourcetype` string,

`subresourcetype` string,

`visitor` string,

`useragent` string,

`ipaddress` string,

`measurementmethod` string,

`justassigned` boolean,

`robotactivity` string,

`robotua` string,

`pageurl` string,

`referringurl` string,

`targeturl` string,

`duration` int,

`screenresolution` string,

`colordepth` string,

`languagecode` string,

`javaenabled` boolean,

`cookieenabled` boolean,

`customtags` array<struct<name:string,value:string>>,

`partnertags` array<struct<name:string,value:string>>,

`documenttitle` string,

`homepage` boolean,

`connectiontype` string,

`timezoneoffset` int,

`browser` string,

`browserversion` string,

`os` string,

`osversion` string,

`country` string,

`region` string,

`city` string,

`connectionspeed` string,

`latitude` float,

`longitude` float,

`metrocode` int,

`firstevent` boolean,

`cookieblocked` boolean,

`clickpoint` string,

`primarygroup` string,

`campaign` string,

`creative` string,

`placement` string,

`result` string,

`markedresult` boolean,

`revenue` float,

`creativegroup` string,

`streamduration` int,

`adserver` int,

`endpoint` int,

`publisher` string,

`adnetwork` string,

`identity` string,

`sequencenum` int,

`chapter` int,

`totalchapternum` int,

`customtagstr` string,

`donottrack` boolean,

`zipcode` string,

`viewabilitystatus` string,

`channelasset` string,

`crashidentifier` boolean,

`product` string,

`reportingdatadate` string,

`viewtimeoffset` int,

`providerlist` string,

`suppressprovider` string,

`forwardflag` boolean,

`accessmethod` int,

`encryptionidentifier` boolean,

`daycd` string,

`hourcd` int,

`userlatitude` float,

`userlongitude` float,

`assetid` string,

`advertiseid` string)

PARTITIONED BY (

`traf_type` string,

`date` string,

`hh` string,

`part` string)

ROW FORMAT SERDE

'org.apache.hadoop.hive.ql.io.orc.OrcSerde'

STORED AS INPUTFORMAT

'org.apache.hadoop.hive.ql.io.orc.OrcInputFormat'

OUTPUTFORMAT

'org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat'

LOCATION

'hdfs://nameservice1/user/hive/warehouse/dbname.db/tablename'

TBLPROPERTIES (

'last_modified_by'='hive',

'last_modified_time'='1445934602',

'transient_lastDdlTime'='1445934602')

Time taken: 0.205 seconds, Fetched: 98 row(s)

hive>

IMPALA

=====

[impalarunning.server.org:21000] > SHOW CREATE TABLE tablename;

Query: show CREATE TABLE tablename

ERROR: AnalysisException: Failed to load metadata for table: dbname.tablename

CAUSED BY: TableLoadingException: Unrecognized table type for table: dbname.tablename

[impalarunning.server.org:21000] >

Original table name is replaced by "tablename."

Re: Unable to run query select * from

Tim Armstrong — Fri, 06 Nov 2015 06:46:56 GMT

The table use the ORCFile format, which we don't support in Impala. We
recommend using Parquet, which is supported by Hive, MapReduce, Impala and
many other systems.

Re: Unable to run query select * from

Vishwa828 — Fri, 06 Nov 2015 09:48:22 GMT

Hi,

Many thanks for the information.

Is there any official web link which informs us about orc format being not supported?

Re: Unable to run query select * from

Tim Armstrong — Fri, 06 Nov 2015 17:06:56 GMT

The Impala documentation lists the supported file formats:
http://www.cloudera.com/content/www/en-us/documentation/enterprise/latest/topics/impala_file_formats.html

Re: Unable to run query select * from

Vishwa828 — Fri, 13 Nov 2015 06:02:45 GMT

Thanks for your support. Case is closed now.